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Thursday 26 October 2017

Fractions: add/sub

LI: To learn how to add and subtract fractions with different denominators



Fractions: add/sub different denominator

Number
Problem
Answer in fractions
Simplify
Answer in mixed numerals
1
½ + ¼ =
6/8
3/4

2
⅓ + ¼ =
7/12


3
⅙ + ⅛ =
14/48
7/24

4
⅕ + ¼ =
9/20


5
⅔ + ⅕ =
13/15


6
⅚ + 1/7 =
41/49


7
⅖ + ⅜ =
31/40


8
2/3 + ⅚ =
27/18
3/9
1 9/18
9
¾ + 6/8 =
48/32
24/16
1 16/32
10
4/7 + ¾ =
35/28

1 7/28
11
7/9 + 6/7 =
103/63

1 40/63
12
⅝ + ⅚ =
70/48
35/24
1 22/48
13
3/9 + ¾ =
39/36

1 3/36
14
8/5 + 3/7 =
71/35

2 1/35
15
9/4 + 8/10 =
122/40
61/20
3 2/40



Number
Problem
Answer in fractions
Simplify
Answer in mixed numerals
1
⅞ - 2/3
5/24


2
⅘ - 1/4
11/20


3
7/6 - 2/5
23/30


4
4/3 - 2/7
22/21

1 1/21
5
7/9 - 4/6
6/54
3/27

6
3/7 - 3/8
3/56


7
7/10 - 2/6
22/60
11/30

8
7/4 - 2/9
55/36

1 19/36
9
10/11 - 3/4
7/44


10
6/12 - 1/4
12/48
3/12

11
4/9 - 5/12
3/108


12
17/20 - 7/10
30/200
15/100

13
8/14 - 3/21
126/294
63/147

14
32/40 - 7/20
360/800
45/100

15
15/4 - 17/28
352/112
176/56
3 16/112



Today we were learning how to add and subtract fractions first we had to do fractions that are the same and just fractions. Then after that we had to do the addition but with fractions and if it went over the denominator you would have to  go something like 1 whole and 2 over 35 and when you take away you have to times the other denominator by the other one and that is your denominator until you are done with that question.          

1 comment:

  1. Greetings Julian, I did fractions on addition and subtraction too. I like the way you added the DLO of the equivalent fractions. I also like the way you added the google docs of the fraction questions.
    Keep up the good work!

    ReplyDelete